package com.git.demo.gateway.filter;

import com.google.gson.JsonObject;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.nio.charset.StandardCharsets;
import java.util.List;

@Component
@Slf4j
public class AuthGlobalFilter implements GlobalFilter, Ordered {

    private AntPathMatcher antPathMatcher = new AntPathMatcher();

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
//        ServerHttpRequest request = exchange.getRequest();
//        String path = request.getURI().getPath();
//        if(antPathMatcher.match("/**/api/**", path)) {
//            List<String> tokenList = request.getHeaders().get("token");
//            if(null == tokenList) {
//                ServerHttpResponse response = exchange.getResponse();
//                return out(response);
//            } else {
//                //验证token
//                if(true){
//                    return chain.filter(exchange);
//                }else{
//                    ServerHttpResponse response = exchange.getResponse();
//                    return out(response);
//                }
//            }
//        }else {
//            ServerHttpResponse response = exchange.getResponse();
//            return out(response);
//        }
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }

//    private Mono<Void> out(ServerHttpResponse response) {
//        JsonObject message = new JsonObject();
//        message.addProperty("code", 28004);
//        message.addProperty("data", "鉴权失败");
//        byte[] bits = message.toString().getBytes(StandardCharsets.UTF_8);
//        DataBuffer buffer = response.bufferFactory().wrap(bits);
//        response.getHeaders().add("Content-Type", "application/json;charset=UTF-8");
//        return response.writeWith(Mono.just(buffer));
//    }
}
